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Finding the Fourth Proportional to 617,122.19, 851,707.41 and 345,205.19

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Solution

The fourth proportional to 617,122.19, 851,707.41 and 345,205.19 is: 476,427.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,122.19 : 851,707.41 = 345,205.19 : x
  2. Step 2: Convert to fraction form
    617,122.19/851,707.41 = 345,205.19/x
  3. Step 3: Cross multiply
    617,122.19x = 851,707.41 × 345,205.19
  4. Step 4: Simplify right side
    617,122.19x = 294,013,819,128.21
  5. Step 5: Solve for x
    x = 294,013,819,128.21/617,122.19
  6. Step 6: Final answer
    x = 476,427.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.